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8 papers · 1 filter
Reverse triangle inequality in Hilbert -modules
M. Khosravi, H. Mahyar, M. S. Moslehian
We prove several versions of reverse triangle inequality in Hilbert -modules. We show that if are vectors in a Hilbert module over a -alge…
Classical Analogue of the Ionic Hubbard Model
M. Hafez, S. A. Jafari, Sh. Adibi +1
In our earlier work [M. Hafez, {\em et al.}, Phys. Lett. A {\bf 373} (2009) 4479] we employed the flow equation method to obtain a classic effective model from a quantum mechanical…
Decoherence in one-dimensional Quantum Walk
Mostafa Annabestani, Seyed Javad Akhtarshenas, Mohamad Reza Abolhassani
In this paper we study decoherence in the quantum walk on the line. We generalize the method of decoherent coin quantum walk, introduced by Brun et al [Phys. Rev. A {\bf 67}, 32304…
Quantum Stochastic Stability
Javad Sharifi, Hamidreza Momeni
the stability criterion is constructed for open quantum systems which govern by quantum stochastic differential equations (QSDE) both for quantum observable flow and the stochastic…
Constraints on the masses of fourth generation quarks
S. Hosseini, M. Mohammadi Najafabadi, A. Moshaii +2
We study the one-loop contribution of the down-type quark of the standard model-like fourth generation (b') on the top quark electric dipole moment. Using the known limits on the t…
Neutral triplet Collective Mode as a new decay channel in Graphite
M. Ebrahimkhas, S. A. Jafari
In an earlier work we predicted the existence of a neutral triplet collective mode in undoped graphene and graphite [Phys. Rev. Lett. {\bf 89} (2002) 16402]. In this work we study…